Pneumatic tire.



PATENTED JUNE 25. 1907.

M. V. RUSH. PNEUMATIG TIRE. APPLICATION FILED Nov. 1o, 1906.

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UNITED STATES PATENT OFFICE.

PNEUMATIC TIRE..

Specification of Letters Patent.

Patented June 25, 1907.

Application filed November 10,1906. Serial No. 342,856.

To all whom, t may con/cern.-

Be it known that I, MARTIN V. RUsH, a citizen of the United States,residing at Anderson, in the county of Madison and State of Indiana,have invented certain new and useful Improvements in Pneumatic Tires andI do hereby declare that the following is a full, clear, and exactdescription of the same, reference being had to the annexed drawings,making a part of this specification, and to the letters and 'figures ofreference marked thereon.

The present invention has for its object to provide a pneumatic tirethat will possess strength and durability and that is capable of use onall class of cycles, automobiles, and other like vehicles, and consistsin a tire constructed substantialljv,T as shown in the drawings andherein described and claimed.

Figure l of the drawings is a perspective view of a fragment of a tireconstructed in accordance with my invention, the end of the tire beingshown in section. Fig. 2 an end view on an enlarged scale showing indotted lines the position of the tire when com pressed.

In the accompanying drawings A represents the outer tube preferablycomposed of a suitable fabric and rubber or constructed in any mannerthat will admit of the necessary elasticity and flexibility of the tire,and upon the tube is the usual rim B. lVithin the tube A is located aconcavo-convex air tube C and between the air tube and the outer tube islocated a double convex core D which may be of felt or other likematerial possess all-,the requirements necessary in a tire of thischaracter.

The interposing of the core D between the concavo-convex tube C and thetread of the tube A and constructing the core double convex produces atire which cannot be cut by the rim for the reason that the convex bulgewill strike the hollow of the rim and the weight that is on the tirewill be directed to the center of the hollow of the rim and therebyprotect the tire from cuttingl on the edges of the rim.

The 4construction of the tire herembefore described will render the samepuncture proof against tacks, nails, glass, and all sharp and roughobjects that are encountered on roadways, thus providing a pneumatictire that will possess many superior qualities over the tires inordinary use.

Having now fully described my invention, what I claim as new and desireto secure by Letters Patent, is

As an improved article of manufacture, the herein described pneumatictire, the same composed of an outer tube of elastic material, aconcave-convex air tube independent thereof and located therein andoccupying more than one-half of the area thereof and having its oppositewalls curved in the same direction, and a double convex core locatedbetween the air tube and the tread of the outer tube, said core upon oneof its convex sides snugly tting the concave side of the air tube, saidouter tube and the air tube being` laterally expansible whereby, whendeflated, the double convex core will be forced to the center of the rimand constitute the entire tread portion.

In testimony whereof I affix my signature in presence of two witnesses.

MARTIN V. RUSH.

Witnesses EDG-An E. HENDEE, J. E STARKEY.

